Flow-regulator for paper-making machines.



L. S. McCURDY.

FLOW REGULATOR FOR PAPER MAKING MACHINES.

APPLICATION FILED JUNE 19, 1914.

1,154,788. PatentedSept. 28, 1915.

2 SHEETS-SHEET I.

WIW l ZFW L. S. McCURDY. now REGULATOR FOR PAPER MAKING MACHINES. v

APPLICATION FILED JUNE 19, 1914.

PateptedSept. 28, 1910.

- 2 SHEETSSHEET 2.

M. Q r Z5527 To all whom it may concern LESTERS. MCCURDY, THOROlQD, ONTARIO, CANADA.

FLOW-REGULATOR FOR PAPER-MAKING MACHINES Be it known that I, Lns'rnn S. MCCURDY, a citizen of the United States of America, residing at the town of Thorold, 'in the county of Welland, lfrovinceof Ontario,

Canada, have invented certain new and useful Improvements'in Flow-Regulators for Paper-Making Machines, of which the following is a specification.

My object is to devisemeans for accurately and quickly regulating the flow of paper stock to the endless wire cloth mold of the paper machine, for the following purelevation of the adjiustin poses: LToobtain perfect uniformity of thickness of paper in any desired width or thickness. QQTo obtain any desired width of flow within predetermined limits, and 3. To obtain any desired speed of flow without the use of feed aprons'and without the necessityof varying the proportion of water in the stock.- a

I attain my object by means of the constructions hereinafter described and illustrated in the accompanying drawings in which Figure 1 1s a longitudinal section. of part lOf the paper-making machine provided with my flow regulator; a front elevation of the parts shown in 1; Fig. 3 a side means for the sluice way Fig. dea plantgriew of part'of the apparatus showing the i heans for. adjusting the sluice way at itsforward end; and Fig. 5 a detail showing the 'inethod of hinging the sections of the slice bar.

In the. drawings like numerals of reference indicate corresponding parts in the different figures. H 1 is the flow box of which Qis the forward end, and 3 a cross partition below which the stock must flow to reach the exit to the sluice way.

4 is the breast roll which carries the endless wire .mold 5.

Specification of Letters Patent.

Patented Sept. 28, .1915.

Application filed June 19, 1914. Serial No. 846,108;

.instead a sluice way 11 provided with a bottom and suitable sides. This sluice way exto a point close to and above the endless mold. ThlS sluice wayis arranged as herelnafter described to receive stock from the flow box and to discharge it at any desired veloclty within predetermined limits, the velocity being determined by tilting the sluice way to a suitable angle to give-the velocity of flow desired. Means for tilting the sluice way will be hereafter described.

.The following means are provided to discharge the stock into the sluice wayl The tends from the forward end of the flow box rearward end of the sluice way is secured to a curved breast piece 12. The rearward surface of this breast piece forms part of the surface of a cylinder, of which theaxis is located at the'forward edge of the bottom of the sluice way, the latter being arranged to tilt on this edge as an axis The breast piece 12 is fitted closely to the forward end 2 of the flow box so as to maintain close contact therewith as the breast piece be raised or lowered. Packings are preferably employed to keep the joint tight, such for eX-' ample as the strip. of packing hose 13 shown in Fig. 1. While the sluice way may be permanently connected with the breast piece, it is preferably hinged thereto at 14: so that the sluice way may be thrown up if it is desired to obtain access'to parts underneath. When the sluice way is in working position, it restson the forward extension 15 of the breast piece so that in effect when the apparatus is in use the sluice way and breast piece have a fixed relationship to one another. The upper edge of the breast piece forms an overfall for the stock flowing from the-box, and as the breast piece is raised the' height of the overfall is also raised, and consequently the head through which the stock falls from the upper edge of the breast plate to the endless mold. Thus, within the limits of adjustment any desired head and consequent velocity of flow may be given to the stock flowing through the sluice way. Preferably a strainer 16 is secured to the breast piece, the rear edge of which fits close to the partition 3. here this parti tion contacts with the strainer as the latter rises and falls with the breast piece, the surface ofthe partition-is curved on a curve larly in Fig. i. the slice bar support and \\'ltl\ it the sections halved so that the total the flow of stock to the mold, and conse quently the thickness ot the paper formed. In my construction this slice bar is carried by the sluiceway 11. The slice bar is torn icd ol a mun .er of sectiol'is 17 carried by the support 18. This support is suitably guided on the sides 01 the sluice way so as to be vertically movable and is adjuslcd by means of the adjusting screws 18L whiclrscrew through the lugs ill formed at the ends of the support IH'and engage the sid s oi the sluice way. as shown particu- By adjusting these screws of the slice bar are verticallyadjusted as a whole. The sections 17 ol. this slice ba are hinged together on the hingepius 21. The ends of the sections are overlapped and thickness at the hinge is no greater than at other points in the length of a. section. A slice bar is thus formed which may be llexed or bent so that at diti'erent parts of its length it may be adjusted at di'tl'erent distances from the bottom of the sluice way. The division of the slice bar might, of course be carried to inlinity, thus producing a perfectly llexible slice bar, but for practical purposes it is sullicient. to

divide it, into about tour or live sections.-

These sections are vertically adjusted by means of the ad usting screws 2-3, wlnch are screwed through the lugs 23 tormed on the support 18, and are journaled 'in the lugs 24 formed on or securet'l to the sections 17. Preferably, alternate sections underlie sections at either side, and the lugs are lULllltLl on the hinged portions of these sections showing at the rear side of the slice bar.

The underlying sections preferably have the holes through which the hinge pins 21. pass slightly (don gated to allow tor the slight elongation of the bar as a, whole which takes I place when its lower edge does not form a straight line parallel with the bottom of the sluice way. .It is evident that by adjusting the screws that the sections of the slice bar may be adjusted independently of the general adjustment so as to correct any irregularities in the flow and thus produce a sheet of paper of eventhicluiess from side to side. i

'In order that the machine may be quickly adapted to produce paper of ditt'ereut widths, I make the forward end oi the sluice way adjustable in width. This is preterably acToniplished in thet'ollowing manner: The forward ends of the sides of the sluice way are formed as wings 25 secured to the rearward portions of the sides. Preferably these wings adjacent the lixed portions of the sides are formed of spring material.

having such a set that the wings tend to spring outwardly. Their outward swing is limited by their contact with the deckle frame as shown particularly in Fig. 4. To each wing is seeureda bottom piece 26 overlapping the sluice way bottom and prefer ably underlying the same. With this arrangement the forward end of the sluice way automatically adjusts itsell in width to suit the spacing of the sides of the deckle frame. which frame. is always adjusted according to the width of the web of paper being produced. ()wing to the overlapping of the bottom pieces ol the wings and the main bottom of the sluice way. the tendency exists to produce a ditl'crence in the thickness ot the llow at the sides of the 'l'orward end of the sluice way and the middle of the same. This tendency is. however. easily corrected by adjusting the. end sections of the slice bar to give a greater l'low toward the sides of the sluice way. This also compensates tor the thinning out due to the spreading ot the width of the stock as it flows from the slice bar to the widened forward end. of the sluice way.

While any desired means might be employed to tiltthe sluice way, I prefer to employ means which would avoid the necessity ot actually placing a shaft at the forward end of the sluice way. 'll'icret'ore, for purposes of adjustment, I provide at each side of the frame. of tha apparatus an areshaped guide 27, the arc being struck from a center located at the forward edge of the bottomof the sluice way. A pairot' pins 38 are secured to each side of the breast plate 12 and project into the guides 27. By suitably moving these pins up the guides, it is evident that. 'the breast plate and the sluice way carried thereby will be tilted on an imaginary axis located at the forward edge ot the bottom of the sluice way. i

For the purpose ot simultaneously raising the breast plate at ach cml I provide the tollowing mechanism. nut 29 is journaled on each of the upper pins 23. 'lhrough each nut is threaded a screw 30. The lower end of each screw is connected by means otbcvel gearing ll with the shalt 32 provided at one end with a hand wheel :53, by means ol which it may be rotated. The screws 30 are at their lower ends jourualcd in bearings 34 on which the shal't. 3; is also journaled, the bearings thus being rotatable on the shalt to acconunwlate themselves to the varying angles o the screws 30 as the upper pins iH move up and down the arcshapcd guides 27.

From the above description it will be seen that l have constructed a machine which will satisfactorilyattain the objrc s of my invention as set out in the preamble to this specification.

Ill)

What I claim as my invention is: 1. In paper making machinery the com- *Ubination of a flow box; a traveling mold;

deckle straps cooperating with said mold; a sluice way having the forward edge of its bottom reaching to a point close to and above the upper surface of the mold and between the deckle straps and its rear end adapted to receive stock from the flow box; and means for supporting said sluice way so that it may be 'tiltedto varying angles to the horizontal on an imaginary axis located substantially at the aforesaid forward edge.

2. In paper making machinery the combination of a flow box; a travelingmold; a curved breast piece forming an overfall for the stock flowingfrom the box; a sluice way secured to said breast piece in fixed relationship thereto and having the forward edge of its bottom reaching to a point close to and above the mold; and means for supporting said sluice way and breast piece so that they may be adjusted to raise the breast piece I ing said sluice way and tilt the sluice way on a stationary imaginary axis located substantially at the aforesaid forward edge, the'said breast piece being suitably fitted to the front'of the flow box to prevent leakage.

3. In paper making machinery the combi nation of a flow box; a traveling mold; deckle straps cooperating with said mold; a breast the overfall for the stock; and a sluice way a-da pig-1 to discharge on to the mold between the deckle straps movable to follow the breastplate andtiltable to vary its angle to the aforesaid mold on an imaginary axis at its forward edge.

4. In paper making machinery thecombination of a flow box; a traveliii gmold; a breast piece vertically adjustable to vary the overfall for the stock; a sluice way movable to follow the breast plate and tilt'able to vary its angle to the aforesaid mold; a strainer board secured to the breast piece; and a partition with which the rear edge of said strainer board contacts as the breast piece rises'and falls.

5. In-paper making machinery the combination of a fiowbox; a traveling mold; a curved breast piece forming an overfall for the stock flowing from the box a sluice way secured to said breast piece in fixed relationship thereto and having the forward edge of its bottom reaching to a point close to and above the mold; means for supportand breast piece so that they may be adjusted to raise the breast piece and tilt the sluice way on an axis located substantially at the aforesaid forward edge, the said breast piece being suitably fitted to-the front of the flow box to prevent leakage; a strainer board 4 secured to the breast piece; and a partition with which the rear; edge of said strainer board contacts as piece vertically adjustable to vary I bination the breast piece rises and falls, said, partition being curved to correspond with the curved path followed by the rear edgeof the strainer board. i

6. In paper making machinery the combination of a flow box; a traveling mold; a

sluice way having. the forward-edge of its ing the slice bar as a whole 'to 'and from; the

bottom of the sluice way; and means for adjusting the sections to v tom of the sluice way independent of the general adjustment.

7.'In paper' making machinerythe combination of a flow box; a traveling mold; a sluice way adapted to convey stock from the flow box to the'mold; a sectional slice bar controlling the flow through the sluiceway and comprising a plurality of sections hinged together; means for adjusting the slice bar as a whole to and from the bottom of the sluice way; and means for adjusting the sections to and from the bottom of the sluice way independent of the general adjustment.

8. In paper'making machinery the combination of a flow box; a traveling mold; a sluice way adapted to convey stock from the flow box to the mold; a sectional slice bar controlling the flow through the sluice way and comprising a plurality of sections hinged tggether; means for adjusting the slice bar ,as a whole to and from the bottom of the sluice way; and means engaging the hinges for adjusting the-sections to and from the bottom of the sluice way independent of the general adjustment.

9. In paper making machinery the comof a flow box; a traveling mold; a sluice .way having the forward edge of its bottom. reaching to a point close to and above the upper surface of the mold and its rear end adapted to receive stock from the flow box; me ns ior supporting said sluice boxmso that it ma-y be tilted to vary ingangles to the horizontal on an axis located substantially at the aforesaid for.- ward edge; a slice bar controlling the flowthrough the sluice way adapted to bend to permit of the gap for the passage of stock to be set of different depths at different points along the length of the bar; and means for bending said bar to adjust the gap. i

10. In paper making machinery the combination of a flow box; a traveling mold; a

sluice way adapted mold said sluice way and from the bothaving the forward ends of its sides formed as wings flexibly eonnected to the rearward portionsot the sides; and bottom pieces on said wings overlapping'thesluice box bottom.

11. In paper making machinery the combination of a How box; va traveling mold; a

sluice way adapted to convey stock from the How box to the mold, Suld sluice way having the forward ends of its sides formed as wings flexibly connected to the rearward- 'IHHTIOUS of the sides; bottom pieces on said wings overlapping the sluice box bottom; a slice bar eontrolling the flow through the sluice way adapted to bend to permit of the ap for .the passage of stock to be set of different depths at difl'erent points along the length of the bar; and means for bending said bar to adjust the-gap;

spring means tending to press the wings outwardly; and a deckle frame with which said wings contact to limit their outward movement.

Niagara Falls, Out, this eighth day of June A. 111914.

Signed in the presence of- Enw. b. 'llnnsnn,

lxlnnmcn'r Wmnxux. 

